Scientific Fundament, Innovation, Practice and Benefits to Use Zeolite Tuff in Cement Manufacturing in Georgia.

Georgia and the Georgian cement producers are pioneers of using Zeolite Tuff (ZT) in the cement grinding process. ZT reserves in Georgia reach 300.0 million tons. Formally, EN standards regulates that it is allowed to use a material which contains more than 25% SiO2 in its composition as a mineral pozzolanic cement additive. ZT meets the formal requirement of EN standards, because it contains at least 40% SiO2. ZT -without reducing the technical properties of cement and concrete, cement can be introduced in an amount of up to 40% by weight of the clinker, which is very important from an economic point of view, because the share of the most expensive and energy-intensive component in cement, clinker, decreases. This will also reduce the emission of harmful gases into the atmosphere by 40%: the CO2 emission will decrease from 0,585-0,640 t/t.kl.up to 0,351-0,384 t/t.kl.; Emission of SOx from 1,150-9,180 kg/t.klup to 0,690-5,508 t/t.kl.; Emission of NOx from 0,285-1,140 kg/t.kl.up to 0,171-0,684 t/t.kl., which is very important from an ecological point of view. There are given results of experiments on the basis of ZT and technics & possibilities it's using in cement technology.